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Publication numberUS5353835 A
Publication typeGrant
Application numberUS 08/126,844
Publication dateOct 11, 1994
Filing dateSep 23, 1993
Priority dateSep 23, 1993
Fee statusLapsed
Also published asDE4431883A1
Publication number08126844, 126844, US 5353835 A, US 5353835A, US-A-5353835, US5353835 A, US5353835A
InventorsFloyd D. Mills
Original AssigneeIngersoll-Rand Company
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Air tank drain
US 5353835 A
Abstract
An automatic air tank drain is provided by forming a venturi induced suction at the tank outlet which draws liquid out of the tank as the tank air is exhausted past the venturi through a flexible hose positioned by a weight at the tank bottom.
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Claims(9)
What is claimed is:
1. A tank venturi drain comprising:
a tank for receiving and storing a compressible pressure fluid;
a port means in said tank for delivery of said pressure fluid to a conduit extending from said tank;
a deployable suction conduit extending from said port means to a selected deployed point within said tank;
a venturi means formed in said port means for producing suction to educt liquid from said suction conduit and said selected point within said tank; and
said suction conduit being provided with a weight at one end extending to said selected point within said tank to assist its deployment proximit to said selected point and wherein said selected point is the low end of the tank interior.
2. An air tank venturi drain according to claim 1 wherein: said suction conduit is a flexible conduit.
3. A tank venturi drain according to claim 1 wherein: said tank is a pressure storage tank for pneumatic fluid for an air starter for a vehicle.
4. A tank venturi drain comprising:
a tank for receiving and storing a compressible pressure fluid;
a port means in said tank for delivery of said pressure fluid to a conduit extending from said tank;
a deployable suction conduit extending from said port means to a selected deployed point within said tank;
a venturi means formed in said port means for producing suction to educt liquid from said suction conduit and said selected point within said tank; and
said venturi means is formed by the placement of said conduit in a milled slot in said port means.
5. A tank venturi drain according to claim 4 wherein: said conduit means further comprises a hose.
6. A tank venturi drain according to claim 5 wherein: said hose is maintained in position in said slot by a snap ring.
7. A venturi drain according to claim 6 wherein: said hose is further provided with a weighted end means for positioning said hose to a low point in said tank.
8. A venturi drain according to claim 7 wherein: said weight and said hose are provided with means for assuring liquid access to said hose.
9. A venturi drain according to claim 8 wherein: said means for assuring liquid access comprises a slot means on said weight and means for positioning said hose slightly away from the bottom of said tank in its operating position.
Description
BACKGROUND OF THE INVENTION

This invention relates generally to air storage tank drains and more particularly to an automatic venturi drain which expelled accumulated liquid in the tank along with the stored air withdrawn from the tank. Current engine air starter storage tanks utilize a pet-cock located at the low point of the tank for periodic removal of liquids. Typically this is a maintenance item which is forgotten. Various schemes exist for automatically activating a valve to keep the liquids out of the tank. These are complicated, requiring electric or pneumatic control valves and are, therefore, prone to failures.

The foregoing illustrates limitations known to exist in present devices and methods. Thus, it is apparent that it would be advantageous to provide an alternative directed to overcoming one or more of the limitations set forth above. Accordingly, a suitable alternative is provided including features more fully disclosed hereinafter.

SUMMARY OF THE INVENTION

In one aspect of the present invention this is accomplished by providing an air tank venturi drain comprising a tank for receiving and storing a compressible pressure fluid; a port means in the tank for delivery of the pressure fluid to a conduit extending from the tank; a suction conduit extending from the port means to a selected point within the tank; and a venturi means formed in the port means for producing suction to educt liquid from the suction conduit and the selected point within the tank.

The foregoing and other aspects will become apparent from the following detailed description of the invention when considered in conjunction with the accompanying drawing figures.

BRIEF DESCRIPTION OF THE DRAWING FIGURES

FIG. 1 is a partial sectioned view of a vertically orientated air tank containing a venturi drain according to the present invention;

FIG. 2 is a partial sectioned view of an air tank according to the present invention shown in a horizontal position; and

FIG. 3 is a detailed cross section showing the venturi design according to the present invention.

DETAILED DESCRIPTION

Referring to FIG. 1, an air tank for a pneumatic engine starter or the like is shown and generally referred to by reference numeral 1. The tank is provided with a port 2 which in the present case is utilized to fill and extract pressure fluid which may, for example, be compressed air or other suitable gas. The tank 1 is further provided with a flexible suction tube 3 extending from the nozzle or port 2 to a low position in the tank where it is open terminated and held in position by a gravity weight 4.

The suction tube 3 is positioned within the nozzle 2 in a groove 5 formed within the interior of the nozzle. The tube or hose 3 is secured within the groove 5 by means of a snap ring 6 or the like (best seen in FIG. 3). The construction shown permits the drain to be readily assembled in the nozzle by simply feeding the flexible conduit into the groove formed in the nozzle and securing it therein by insertion of a snap ring in a groove formed within the nozzle. The open end 10 of the conduit or hose 5 is positioned within the nozzle and formed so as to create a venturi effect as pressure fluid is delivered from the storage tank. The venturi effect creates a suction in the conduit or hose 3 which in turn withdraws any liquid at the bottom of the tank.

The gravity weight 4 is shown attached to the bottom end of the suction tube 3 and is provided for the purpose of assisting the suction tube to find the low portion of the tank in service. This permits the tank to be installed in a vertical position as shown in FIG. 1 or in a horizontal position as shown in FIG. 2. The gravity weight 4 and the suction hose 3 are provided with a notch and bias cuts (of the hose) 11 to permit fluid to be drawn into the suction hose when the gravity weight 4 is on the bottom of the tank.

Further, as shown in FIG. 3, the tank may be constructed of a metallic outer shell 1 having a suitable corrosion resistant inner coating 8 of plastic or fiberglass or similar material. A nozzle reinforcement 9 may be utilized and may be made of metal or similar structurally sufficient material to resist the nozzle forces created by the piping connections to the tank.

Thus, it should be now apparent to one skilled in the art that any unwanted liquid in the pressure fluid storage tank will be withdrawn and delivered with the pressure fluid exiting the tank upon withdrawal demand of pressure fluid.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2878067 *Dec 1, 1954Mar 17, 1959Air ShieldsAtomizer construction
US2939477 *Dec 13, 1956Jun 7, 1960Ford Motor CoPressure relief and water expulsion valve
US3040991 *Aug 10, 1960Jun 26, 1962Vaporisateurs Marcel Franck SLiquid sprayers
US3088680 *Jul 19, 1960May 7, 1963Fulton Robert ADispenser for pressurized products
US3379373 *Dec 22, 1965Apr 23, 1968Root Lowell Mfg CompanyMethod and means for producing and controlling the discharge of fog
US3379379 *Jun 28, 1966Apr 23, 1968Butterworth System IncTank washing apparatus having oscillating nozzles
US4294779 *Aug 14, 1980Oct 13, 1981Aquascooter Inc.Carburetor device
US4622996 *Mar 14, 1985Nov 18, 1986Donaldson Company, Inc.Aspirator for pulse-jet air cleaner
US4850517 *Sep 26, 1986Jul 25, 1989Airspray International B.V.Pressurized spray dispenser having valved mixing chamber
US4890646 *Apr 17, 1989Jan 2, 1990Acf Industries, IncorporatedFlexible siphon pipe for tank car
US5005601 *Nov 3, 1989Apr 9, 1991Strong Thomas FAutomatic proportioning fertilizer injector
US5148840 *Nov 25, 1991Sep 22, 1992Dayco Products, Inc.Hose assembly having a venturi section wtih a slide member therein and method of making the hose assembly
US5188294 *Apr 23, 1991Feb 23, 1993Sealy J MichaelApparatus for dispensing/applying a material
US5195664 *Apr 3, 1992Mar 23, 1993Steven RheaAll directional fluid pick-up
US5211202 *Dec 2, 1991May 18, 1993Montana Sulphur & Chemical Co.Fluid apparatus with pressure-tight recessed well
GB2031526A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5893385 *Aug 8, 1997Apr 13, 1999Toyota Jidosha Kabushiki KaishaLiquid discharging device for discharging liquid stored on a bottom wall of an interior of a compressed natural gas tank of a vehicle
US6012453 *Oct 15, 1997Jan 11, 2000Figgie Inernational Inc.Apparatus for withdrawal of liquid from a container and method
US6694889Feb 11, 2003Feb 24, 2004Trn Business TrustSiphon drainpipe system and method for a railway tank car
US8387649 *Mar 1, 2010Mar 5, 2013Campbell Hausfeld/Scott Fetzer CompanyTank condensation drain
US8756976 *Sep 13, 2011Jun 24, 2014Honeywell International Inc.Systems and methods for gettering an atomic sensor
US20070186925 *Feb 9, 2007Aug 16, 2007Blalock Clayton EApparatus for Drawing a Cryogenic Liquid from a Container
US20110209776 *Mar 1, 2010Sep 1, 2011Parks Berlie ETank Condensation Drain
US20130061655 *Sep 13, 2011Mar 14, 2013Honeywell International Inc.Systems and methods for gettering an atomic sensor
US20140013735 *Sep 12, 2013Jan 16, 2014Troy O. McBrideFluid storage in compressed-gas energy storage and recovery systems
WO1996033367A1 *Mar 22, 1996Apr 18, 1998Figgie Int IncApparatus for withdrawal of liquid from a container and method
Classifications
U.S. Classification137/590, 137/204
International ClassificationF02N9/04, F17C13/00
Cooperative ClassificationF17C2260/053, F17C2223/0123, F17C2203/0607, F17C2203/066, F17C2201/035, F17C2201/0109, F17C2221/031, F17C2203/0636, F17C2227/0114, F17C2223/047, F02N9/04, F17C13/005
European ClassificationF17C13/00H, F02N9/04
Legal Events
DateCodeEventDescription
Dec 5, 2006FPExpired due to failure to pay maintenance fee
Effective date: 20061011
Oct 11, 2006LAPSLapse for failure to pay maintenance fees
Apr 26, 2006REMIMaintenance fee reminder mailed
Apr 30, 2002REMIMaintenance fee reminder mailed
Apr 10, 2002FPAYFee payment
Year of fee payment: 8
Apr 10, 1998FPAYFee payment
Year of fee payment: 4
Sep 23, 1993ASAssignment
Owner name: INGERSOLL-RAND COMPANY, NEW JERSEY
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MILLS, FLOYD D.;REEL/FRAME:006715/0592
Effective date: 19930917